[gcalctool/vala] Remove unreachable code

[Robert Ancell <rancell src gnome org>]

commit 3f1e221df2a4b2a1f2c556fa8c42cd4caa0c0532
Author: Robert Ancell <robert ancell canonical com>
Date:   Sat Oct 13 10:11:22 2012 +1300

    Remove unreachable code

 src/test-number.vala |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/src/test-number.vala b/src/test-number.vala
index f4d1a9c..5c5da62 100644
--- a/src/test-number.vala
+++ b/src/test-number.vala
@@ -1080,8 +1080,6 @@ private List<int> factorize (int number)
             }
         }
     }
-
-    return factors;
 }
 
 static int main (string[] args)